Yoon, who was impeached and suspended from office in December, is the first sitting South Korean president to be arrested.

After lawyers of South Korean President Yoon Suk Yeol argued that his arrest on January 15 was unlawful, a photo spread in social media posts falsely claiming it showed a search warrant used to illegally detain him rather than an arrest warrant.

Investigators say Yoon Suk Yeol abused his power when he tried to impose martial law last month. He would become the first sitting South Korean president to be arrested.

South Korea's impeached president, Yoon Suk Yeol, was formally arrested early Sunday, days after being apprehended at his presidential compound in Seoul, as he faces possible imprisonment over his ill-fated declaration of martial law last month.

South Korean investigators have requested an arrest warrant for President Yoon Suk-yeol. That would allow them to keep Yoon in custody to continue their investigation.

Disgraced South Korean President Yoon Suk Yeol was reportedly arrested over insurrection charges stemming from last month's shocking martial law declaration.

South Korea’s impeached president, Yoon Suk Yeol, has been formally arrested, days after being apprehended at his presidential compound in Seoul.

Seoul court expected to rule as early as Saturday night on request by Corruption Investigation Office for High-ranking Officials for warrant to formally arrest Yoon on insurrection charges - Anadolu A

South Korea's anti-corruption officials on Thursday requested that prosecutors indict impeached President Yoon Suk Yeol for insurrection and abuse of power for his short-lived martial law declaration.